Paper-folding machine



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Patented Apr. 4, 1922. 3 SHEETS-SHEET] @Mail Za/26 H. L. GLAZE.

PAPER FOLDING MACHINE. APPLlc/moN man JULY 25, 1919.

Panted Apr. 4, 1922.

3 SHEETS-SHEET 2.

H. L. GLAZE.

PAPER FOLDING MACHINE.

SHEET s.

Apr. SHEE TS- UNITED STATES HERBERT L. GLAZE, OF LGS ANGELES,

PATENT OFFICE.

CALIFORNIA, Assren'onro rLAsfrorn OF CALIFORNIA.

PAPERFOLDIIV\TG TEACINE.

Application filed July 25,

T0 all whom z' 'may concern .Be it known that I, Hnnnnntr L. (hun, acitizen of the United States, and a resident of Los Angeles, in thecounty of Los Angeles and State of California, haveV invented new anduseful Improvements in Paper-Fold ing Machines, of which the followingis a specification.

This invention relates to and has for its main object the provision of amachine by means of which paper may be folded as it is unwound anddelivered from a reel or spool to the machine in a continuous operation,and means (3o-operating therewith for re winding the paper on a suitablespool or reel after the folding operation.

For the purposes of this invention, the paper is prepared in ribbon likestrips of a convenient length and arranged in reels, preliminary to thefolding' operation, in order that one reelr at a time may be' placed inposition in the machine for use and other reels substituted thereforduring the operation of the machine, the paper being wound again afterhaving been properly folded.

Another object is to provide means for supporting the paper to be foldedin position for the folding operation, together with a plurality ofsuccessive folding elements arranged in the path of movement of thepaper for gradually molding or bending the paper into the desired shapeand thereafter rewinding the folded paper for use.

A further object is to provide a'prelimi nary marking means whereby' thepaper to be folded maybe marked and indented continuously and in astraight line as the paper is advanced thereby,'in order that thesucceeding folding elements mayengage the paper roll at the indentationsand thus more readily form the Vpaper into the desired shape than wouldotherwise be possible. y

A particular object of my invention is to provide a machine wherebyrolls of building' paper, usually or sometimes waterproof in character,may be formed and folded in reverse directions longitudinally ofthepaper so that reentrant folds possessing the characteristics of what, ismore commonly known as dovetail grooves or folds may be providedcontinuously in a sheet of paper for use with a plastic body or core forforming what is commercially known as plaster board or plaster lath.

Specification of Letters Patent.

Patented Apr.4, 1922.

1919. Serial No. 314,346.

.in the provision of a lath of the character referred to it is necessarythat some sort of lock be provided therein for holding the plasterthereon. I have provided and will describe a form of lath in whichdove-tail or reentrant grooves are` provided longitudif nally of thelath for affording a clinch for the plaster. and an object of thisinvention is to provide a satisfactory means for forming the reentrantfolds in the paper in a continuous operation preliminary to themanufacture of the plaster board. Other objects may appear as thedescription progresses.

Referring to the drawings in which I have illustrated one practicalembodiment 'of my invention,

Fig l is a plan of the front portion of my machine; y y

Fig. Q is an elevation, partly in section, of the same; y

Fig. 3 is a plan forming a continuation of Fig. l

F ig. 4 is an elevation forming a continuation of Fig. 2;

Fig. 5 is a front end. elevation;

Fig. 6 is a transverse sectional elevation on line 6 6 of Fig. 3; p

Figs. 7 8, 9 and 10, are respectively, transverse sections on lines "77, S-S, 9-9, and itl-l0, of Fig. l;

Fig. ll is a. fragmentary perspective view of the folded paper as it isrewound for future use;

Fig. l2 is an enlarged perspective view of the marking rollers;

Fig. 13 is a. perspective view of 'the forward folding element.

lWith reference particularly to l, 2, 3 and il, F, is a suitable lframehaving posts l. 1, at the feeding end of the upper ends of'which areprovided yslotted bearings E2, 2, for a transverse shaft 3. A reel ofpaper P' of ribbon like character is rolled on a core or reel R, andsuch a reel is rotatably held on the shaft 3 so vthat the paper P may beadvanced from the reel in tlie'folding op. eration. A trough, or chute,T is supported longitudinally of the frame F and hasf sides 5, 5, and afloor 6, said sides being spaced so as to afford ample clearance at theedges of the paper P, which is adapted to be moved longitudinally overthe floor 6 and between the sides 5, 5.

.Paper P is first advanced under an idler roller 7 at the front end ofthe machine and thence forwardly in the trough T between a pair ofmarking rollers M and M', which have intermeshing ribs S, 8, etc., andgrooves 9, 9, etc., of annular formation extending therearound atregular intervals between which the paper l) is moved. The lower rollerM has a fixed axis in. bearings l0, 10, at the sides of the trough T,suitably held on the frame F, while the upper roller M `is yieldablerelative to roller M and is supported on arms ll, ll, which havefulcrums f, on the sides 5, 5, of the trough and are held in resilientcontact with roller M by means of springs 1Q, carried on bolts13, 13,which are attached at their lower ends to brackets 14, l4,.on frame F.For forming reentrant folds in the paper P, the paper must of necessitybe reversely marked on the opposite sides, so that the ribs 8 on'one ofthe rollers M or M will engage the corresjmnding groow.V 9 on the otherroller, the paper being firmly held therebetween, and thepaper will thusbe indented in a straight line froln end to end as it is moved betweenthe rollers, one side of the paper being so marked by one of the rollsand the opposite side thereof being similarly but inversely marked bythe other roller. i

Adjacent to the rollers M and M', l provide a single cleat`l5 on thefloor 6 of the trough T and midway between the sides 5, 5. thereof. saidcleat bein g suitably spaced from the pair of rollers M and M and theend nearest said rollers being substantially flush with the upper sideof fioor 6, while the remote end thereof is elevated substantially abovethe floor, or for a distance equal to that between the more closelyspaced marks or indentations in the paper l. Thus. as the flat paper l?from the feeding reel emerges from between the marking rollers the endof the ribbon or sheet of paper is drawn through the trough T until itoverylies the end of the trough. A block 16 which has ends 17. 17,thereon adapted to engage horizontal slots 18. 18, in the sides 5. 5,of; the trough is. positioned, asshown in Fig. l for holding the paperin contact with the floor 6 and cleat 15. Block 16 has a metallic shoe19 on the lower side thereof which overlaps the edges of the cleatsslightly for bending the paper thereover at the indentations. i

Forwardly of cleat 15, a triplet of somewhat similar cleats 20, 20 and21 are attached to the floor 6 of the trough, the pair of cleats 20, 20,being oppositely positioned and of substantiallyiequal length and spacedequally from the central cleat 21.. All of said cleats are inclinedforwardly, but the cleat 21 is preferably longer than the cleats 20, 20,so that the partial fold in the paper P produced b v the cleat l5 may heengaged and preserved by means of cleats 2l prior to the tal slots 24,24, in the sides 5, 5, as in the case of the block 16, and the lowerside of this block has a plurality of cleats 25, Q5, ete.`

depending therefrom and alternating withv the cleats 20, 20 and 2l forforcing the sheet of paper P between said cleats and forming it as it ismoved through the trough T, the paper being thus formed into a pluralityof reversely formed rectangular grooves at this point.

j Near the end of the trough T, I provide a central cleat 26 and a pairof like side cleats 27, 27, which are spaced at the front ends so as toafford free entrance of the partially folded paper therebetween, theadjacent edges of said cleats being vertical at the rear ends thereofand the said edges of the'front ends being substantially inclinediuwardlj7 from the upper sides. the. inclination of the edges beinggradually increased from the rear to the front ends of the cleats.

A removable forming member is provided for holding the paper firmly overthe cleats 26, 26 and 27, and consists of a block 2S which is held atthe ends in slots 29 formed in the troughv sides 5, 5, and is providedwith a pair of tapered ngers 30, 30, on the lower side which are adaptedto press the paper into and hold the same in position between thecentral cleat 27 and the side cleats 26, 26. A shoe 31 is provided forholding the paper in contact with the upper sides of the cleats and saidshoe is held on an adjustable arm 32 pivotally attached to the upperside of the block, a wedge 33 being provided thereon for increasing thefriction between the shoe and the paper.

It will be observed that the blocks 16, 29. and 28 are removably held inposition on the trough and are slidable in the direction of the markinrollers M-M for removal from the troug At the rear or discharge end ofthe trough T, l'rprovide a air of rollers 34, 34, .which are resilientlylie'ld on springs 35, 35, attached to the sides 5, 5, of the trough,said rollers being adapted to engage the uppermost folds of paper as thesame is moved thereby for forming the paper in the manner shown in Fig.11.

Adjacent to the rollers 34, 34, I provide a pair of vfriction rollers 36and 36', between which the formed paper is advanced for attening thesame out as shown, the roller 36 being rotatably held in fixed bearin 3737, and the rollers 36 being yieldab held relative thereto in movablearms 38, 38, having fulcrums 39, 39, on the sides 5, 5, of the trough.Springs 40, 40, onbolts 41, 41, attached to brackets 42,42, serve tohold the rollers in resilient engagement. Gears 36a and 36" operablyconnect rollers 36 and 36.

Shaft 43 on roller 36 has a pulley 44 thereon which is driven from amotor driven pulley 45 on a drive shaft 46 by means of a belt 47. Thuswhen the paper l? has been initially advanced to a point between therollers 36 and 36', the friction exerted thereon by said rollers willcontinue to move the paper therebetween until a reel of the paper hasbeen exhausted, whereupon another reel of paper may be substituted andthe operation repeated.

Subsequent to the marking, forming and folding operation hereinbeforedescribed, the paper P is rewound upon a reel 48 Which is carried by ashaft 49 having bearings 50, 50, attached to frames F. Shaft 49 carriesa pulley 51 which is rotated by means ofI a. belt 52 extended over arelatively small pulley 53 on shaft 43; also a hand crank 54 is providedon sha-ft 49, whereby the reel 48 may be manually turned for taking upslack in the paper P or for equalizing the Winding of the paper relativeto the folding thereof. It will be obvious that shaft 49 being rotatedat a 'consta-nt speed as the paper is wound around the axis thereof, andthe hand crank is provided so that the rotation of shaft 49 may beeither retarded or advanced, as the case may be, according to therelative sizes of the reel and the driving pulley 52.

l'Vhat I claim is:

l. A paper folding machine having an elongated receptacle, capable ofsupporting a reel of paper alined therewith and so that a strip of papermay be moved flatwise through said receptacle, means for reverselymarking the opposite sides of said paper in longitudinal lines,relatively fixed and detachable means for preliminarily folding saidpaper in a single line in like directions centrally of the strip,similar means for thereafter folding said paper reversely at the sides,and similar means for finally folding said paper in reentrant folds andWinding the same flatwise upon a reel, as set forth.

2. A paper folding machine having means for reversely creasing the paperin spaced longitudinal lines, relatively fixed. and detachable means forthereafter forming a central rectangular groove therein having itscorners at the crease in the paper, similar means for subsequentlyforming reverse grooves of similar character laterally of said centralgroove, and similar means for finally folding said paper at the cornersof said grooves, said grooves when so formed being reent-rant incharacter.

3. A paper folding machine including a fiat bottom having sides thereonforming a trough in which the paper may be moved, openings in saidsides, and forming blocks held in said openings for engagement with thepaper.

4. A paper folding machine comprising a frame, a stationary horizontaltrough supported thereon adapted to guide paper passing therethrough,relatively adjustable and rotatable creasing rollers for reverselyindenting the paper when moved therebetween, a preliminary formingmember having a single rib thereon for engaging the paper, andsuccessive members having a plu rality of detachable folding elementsfor engaging the paper to different extents whereby the paper may befoldedl from a normally ribbon like condition into a series ofalternating reentrant foldsy for the purpose described.

Signed at Los Angeles,- Los Angeles County, State of California, this25th day of June, 1919.

HERBERT L. GLAZE. llitnesses:

LUTHER L. MACK, H. M. BRUNDAGE.

